docs: def to_json(self):
          """Convert the Sky Condition to a dictionary."""
          return {
              'solar_model': self.solar_model,
              'month': self.month,
              'day_of_month': self.day_of_month,
              'tau_b': self.tau_b,
              'tau_d': self.tau_d,
              'daylight_savings_indicator': self.daylight_savings_indicator
          }